Chevy advertising font

"What the font" says Sommet or Stainless, but neither are exactly right. Sommet's S has different shaped bowls, and Stainless' verticals aren't as straight.



It was slightly customized for Chevrolet, so that may be what tripped up WTF.

Yes, I see that the center of majuscule M in the Chevy version reaches the baseline, unlike the off-the-shelf version. Thanks!